git.sesse.net Git - vlc/blob - modules/services_discovery/mtp.c

   1 /*****************************************************************************
   2  * mtp.c :  MTP interface module
   3  *****************************************************************************
   4  * Copyright (C) 2009 the VideoLAN team
   5  *
   6  * Authors: Fabio Ritrovato <exsephiroth87@gmail.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 #ifdef HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26
  27 #include <vlc_common.h>
  28 #include <vlc_playlist.h>
  29 #include <vlc_plugin.h>
  30 #include <vlc_interface.h>
  31 #include <vlc_services_discovery.h>
  32
  33 #include "libmtp.h"
  34
  35 /*****************************************************************************
  36  * Module descriptor
  37  *****************************************************************************/
  38 static int Open( vlc_object_t * );
  39 static void Close( vlc_object_t * );
  40
  41 VLC_SD_PROBE_HELPER("mtp", N_("MTP devices"), SD_CAT_DEVICES)
  42
  43 vlc_module_begin()
  44     set_shortname( "MTP" )
  45     set_description( N_( "MTP devices" ) )
  46     set_category( CAT_PLAYLIST )
  47     set_subcategory( SUBCAT_PLAYLIST_SD )
  48     set_capability( "services_discovery", 0 )
  49     set_callbacks( Open, Close )
  50     linked_with_a_crap_library_which_uses_atexit()
  51
  52     VLC_SD_PROBE_SUBMODULE
  53 vlc_module_end()
  54
  55
  56 /*****************************************************************************
  57  * Local prototypes
  58  *****************************************************************************/
  59
  60 static void *Run( void * );
  61
  62 static int AddDevice( services_discovery_t *, LIBMTP_raw_device_t * );
  63 static void AddTrack( services_discovery_t *, LIBMTP_track_t *);
  64 static void CloseDevice( services_discovery_t * );
  65 static int CountTracks( uint64_t const, uint64_t const, void const * const );
  66
  67 /*****************************************************************************
  68  * Local structures
  69  *****************************************************************************/
  70
  71 struct services_discovery_sys_t
  72 {
  73     int i_tracks_num;
  74     input_item_t **pp_items;
  75     int i_count;
  76     char *psz_name;
  77     uint32_t i_bus;
  78     uint8_t i_dev;
  79     uint16_t i_product_id;
  80     vlc_thread_t thread;
  81 };
  82
  83 static vlc_mutex_t mtp_lock = VLC_STATIC_MUTEX;
  84 static bool b_mtp_initialized = false;
  85
  86 /*****************************************************************************
  87  * Open: initialize and create stuff
  88  *****************************************************************************/
  89 static int Open( vlc_object_t *p_this )
  90 {
  91     services_discovery_t *p_sd = ( services_discovery_t * )p_this;
  92     services_discovery_sys_t *p_sys;
  93
  94     if( !( p_sys = malloc( sizeof( services_discovery_sys_t ) ) ) )
  95         return VLC_ENOMEM;
  96     p_sd->p_sys = p_sys;
  97     p_sys->psz_name = NULL;
  98
  99     vlc_mutex_lock( &mtp_lock );
 100     if( !b_mtp_initialized )
 101     {
 102         LIBMTP_Init();
 103         b_mtp_initialized = true;
 104     }
 105     vlc_mutex_unlock( &mtp_lock );
 106
 107     if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
 108     {
 109         free (p_sys);
 110         return VLC_EGENERIC;
 111     }
 112     return VLC_SUCCESS;
 113 }
 114
 115 /*****************************************************************************
 116  * Close: cleanup
 117  *****************************************************************************/
 118 static void Close( vlc_object_t *p_this )
 119 {
 120     services_discovery_t *p_sd = ( services_discovery_t * )p_this;
 121
 122     free( p_sd->p_sys->psz_name );
 123     vlc_cancel (p_sd->p_sys->thread);
 124     vlc_join (p_sd->p_sys->thread, NULL);
 125     free( p_sd->p_sys );
 126 }
 127
 128 /*****************************************************************************
 129  * Run: main thread
 130  *****************************************************************************/
 131 static void *Run( void *data )
 132 {
 133     LIBMTP_raw_device_t *p_rawdevices;
 134     int i_numrawdevices;
 135     int i_ret;
 136     int i_status = 0;
 137     services_discovery_t *p_sd = data;
 138
 139     for(;;)
 140     {
 141         int canc = vlc_savecancel();
 142         i_ret = LIBMTP_Detect_Raw_Devices( &p_rawdevices, &i_numrawdevices );
 143         if ( i_ret == 0 && i_numrawdevices > 0 && p_rawdevices != NULL &&
 144              i_status == 0 )
 145         {
 146             /* Found a new device, add it */
 147             msg_Dbg( p_sd, "New device found" );
 148             if( AddDevice( p_sd, &p_rawdevices[0] ) == VLC_SUCCESS )
 149                 i_status = 1;
 150         }
 151         else
 152         {
 153             if ( ( i_ret != 0 || i_numrawdevices == 0 || p_rawdevices == NULL )
 154                  && i_status == 1)
 155             {
 156                 /* The device is not connected anymore, delete it */
 157                 msg_Info( p_sd, "Device disconnected" );
 158                 CloseDevice( p_sd );
 159                 i_status = 0;
 160             }
 161         }
 162         free( p_rawdevices );
 163         vlc_restorecancel(canc);
 164         msleep( 500000 );
 165     }
 166     return NULL;
 167 }
 168
 169 /*****************************************************************************
 170  * Everything else
 171  *****************************************************************************/
 172 static int AddDevice( services_discovery_t *p_sd,
 173                       LIBMTP_raw_device_t *p_raw_device )
 174 {
 175     char *psz_name = NULL;
 176     LIBMTP_mtpdevice_t *p_device;
 177     LIBMTP_track_t *p_track, *p_tmp;
 178
 179     if( ( p_device = LIBMTP_Open_Raw_Device( p_raw_device ) ) != NULL )
 180     {
 181         if( !( psz_name = LIBMTP_Get_Friendlyname( p_device ) ) )
 182             if( !( psz_name = LIBMTP_Get_Modelname( p_device ) ) )
 183                 if( !( psz_name = strdup( N_( "MTP Device" ) ) ) )
 184                     return VLC_ENOMEM;
 185         msg_Info( p_sd, "Found device: %s", psz_name );
 186         p_sd->p_sys->i_bus = p_raw_device->bus_location;
 187         p_sd->p_sys->i_dev = p_raw_device->devnum;
 188         p_sd->p_sys->i_product_id = p_raw_device->device_entry.product_id;
 189         if( ( p_track = LIBMTP_Get_Tracklisting_With_Callback( p_device,
 190                             CountTracks, p_sd ) ) == NULL )
 191         {
 192             msg_Warn( p_sd, "No tracks on the device" );
 193         }
 194         else
 195         {
 196             if( !( p_sd->p_sys->pp_items = calloc( p_sd->p_sys->i_tracks_num,
 197                                                    sizeof( input_item_t * ) ) ) )
 198             {
 199                 free( psz_name );
 200                 return VLC_ENOMEM;
 201             }
 202             p_sd->p_sys->i_count = 0;
 203             while( p_track != NULL )
 204             {
 205                 msg_Dbg( p_sd, "Track found: %s - %s", p_track->artist,
 206                          p_track->title );
 207                 AddTrack( p_sd, p_track );
 208                 p_tmp = p_track;
 209                 p_track = p_track->next;
 210                 LIBMTP_destroy_track_t( p_tmp );
 211             }
 212         }
 213         p_sd->p_sys->psz_name = psz_name;
 214         LIBMTP_Release_Device( p_device );
 215         return VLC_SUCCESS;
 216     }
 217     else
 218     {
 219         msg_Warn( p_sd, "No device found, after all" );
 220         return VLC_EGENERIC;
 221     }
 222 }
 223
 224 static void AddTrack( services_discovery_t *p_sd, LIBMTP_track_t *p_track )
 225 {
 226     input_item_t *p_input;
 227     char *psz_string;
 228     char *extension;
 229
 230     extension = rindex( p_track->filename, '.' );
 231     if( asprintf( &psz_string, "mtp://%"PRIu32":%"PRIu8":%"PRIu16":%d%s",
 232                   p_sd->p_sys->i_bus, p_sd->p_sys->i_dev,
 233                   p_sd->p_sys->i_product_id, p_track->item_id,
 234                   extension ) == -1 )
 235     {
 236         msg_Err( p_sd, "Error adding %s, skipping it", p_track->filename );
 237         return;
 238     }
 239     if( ( p_input = input_item_New( p_sd, psz_string,
 240                                     p_track->title ) ) == NULL )
 241     {
 242         msg_Err( p_sd, "Error adding %s, skipping it", p_track->filename );
 243         free( psz_string );
 244         return;
 245     }
 246     free( psz_string );
 247
 248     input_item_SetArtist( p_input, p_track->artist );
 249     input_item_SetGenre( p_input, p_track->genre );
 250     input_item_SetAlbum( p_input, p_track->album );
 251     if( asprintf( &psz_string, "%d", p_track->tracknumber ) != -1 )
 252     {
 253         input_item_SetTrackNum( p_input, psz_string );
 254         free( psz_string );
 255     }
 256     if( asprintf( &psz_string, "%d", p_track->rating ) != -1 )
 257     {
 258         input_item_SetRating( p_input, psz_string );
 259         free( psz_string );
 260     }
 261     input_item_SetDate( p_input, p_track->date );
 262     input_item_SetDuration( p_input, p_track->duration * 1000 );
 263     services_discovery_AddItem( p_sd, p_input, NULL );
 264     p_sd->p_sys->pp_items[p_sd->p_sys->i_count++] = p_input;
 265 }
 266
 267 static void CloseDevice( services_discovery_t *p_sd )
 268 {
 269     input_item_t **pp_items = p_sd->p_sys->pp_items;
 270     int i_i;
 271
 272     if( pp_items != NULL )
 273     {
 274         for( i_i = 0; i_i < p_sd->p_sys->i_count; i_i++ )
 275         {
 276             if( pp_items[i_i] != NULL )
 277             {
 278                 services_discovery_RemoveItem( p_sd, pp_items[i_i] );
 279                 vlc_gc_decref( pp_items[i_i] );
 280             }
 281         }
 282         free( pp_items );
 283     }
 284 }
 285
 286 static int CountTracks( uint64_t const sent, uint64_t const total,
 287                         void const * const data )
 288 {
 289     VLC_UNUSED( sent );
 290     services_discovery_t *p_sd = (services_discovery_t *)data;
 291     p_sd->p_sys->i_tracks_num = total;
 292     return 0;
 293 }